/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.apache.causeway.testing.unittestsupport.applib.assertions;

/**
 * @since 2.0 {@index}
 */
public final class Asserting {

    private Asserting() {
    }

    public static <T> T assertType(Object o, Class<T> type) {
        if(o == null) {
            throw new AssertionError("Object is null");
        }
        if(!type.isAssignableFrom(o.getClass())) {
            throw new AssertionError(
                    String.format("Object %s (%s) is not an instance of %s", o.getClass().getName(), o.toString(), type));
        }
        return type.cast(o);
    }
}
